The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 11, 2002
Filed:
Apr. 13, 1999
Thomas Baumann, Wettingen, CH;
Reinhard Fried, Nussbaumen, CH;
Reinhard Joho, Küttigen, CH;
Jörg Oesterheld, Fislisbach, CH;
ABB Research Ltd., Zurich, CH;
Abstract
A winding bar ( ) for a high-voltage winding, for example a stator winding of an electric machine, includes a plurality of conductors ( ) which are arranged above and/or next to one another in a conductor bundle. The conductor bundle has a rectangular cross section. The conductor bundle is surrounded by an insulation ( ). An overall improved electric strength is achieved at the edges without changing the insulation thickness because a thickness (d ) of the insulation ( ) on the edges ( ) of the winding bar ( ) is greater than the thickness ( ) of the insulation ( ) on the flat sides of the winding bar ( ). Preferably, a calibration process is used to shape the edge region.